Fiat Kobelco EX355 Tier2, Техническое руководство

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EX355 W1-1-3
PRECAUTIONS FOR DISASSEMBLY AND ASSEMBLY
A
B
SM1001
CORRECTLY
INCORRECTLY
SM1002
a
b b
B
C
A
a
a = b
a
≠
b
SM1003
CORRECTLY INCORRECTLY
Floating Seal Precautions
1. In general, replace the floating seal with a new
one. If the floating is to be reused, follow these
procedures:
(1) Keep seal rings together as a matched set with
seal ring faces together. Insert a piece of
cardboard to protect surfaces.
(2) Check the seal ring face ( A ) for scuffing,
scoring, corrosion, deformation or uneven
wear.
(3) Check O-ring ( B ) for tears, breaks, deforma-
tion or hardening.
2. If incorrectly assembled, oil leakage or damage
will occur. Be sure to do the following, to prevent
trouble.
(1) Clean the floating seal and seal mounting
bores with cleaning solvent.
Use a wire brush to remove mud, rust or dirt.
After cleaning, thoroughly dry parts with com-
pressed air.
(2) Clean the floating seal and seal mounting
bores, as dust on them tends to enter the
floating seal when installing it.
(3) Check that the O-ring is not twisted, and that it
is installed correctly on the seal ring.
(4) After installing the floating seal, check that seal
ring surface ( C ) is parallel with mating face ( A )
by measuring the distances ( a ) and ( b ), as
illustrated. If these distances differ, correct the
O-ring seating.